GitLab

* src/marker.c (buf_bytepos_to_charpos): Remove the assertion
regarding bytepos always at the head byte of a multibyte
sequence.  For the reasons, see
http://lists.gnu.org/archive/html/emacs-devel/2019-03/msg00100.html
http://lists.gnu.org/archive/html/emacs-devel/2019-03/msg00102.html